VIBRATORY DEVICE WITH REPOSITIONABLE WEIGHTS AND METHOD OF EXTENDING THE USEFUL LIFE OF VIBRATORY DEVICES

摘要

A vibratory device comprising a rotor with a shaft which comprises a plurality of keyways and an annular groove on both a first and a second end portion. First and second eccentric weights are mounted to the first and second end portions by keys and stopped from falling off the shaft by first and second retaining rings received in the annular grooves.